FragmentUriGenerator.php
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\HttpKernel\Fragment;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\HttpKernel\Controller\ControllerReference;
use Symfony\Component\HttpKernel\UriSigner;
/**
* Generates a fragment URI.
*
* @author Kévin Dunglas <kevin@dunglas.fr>
* @author Fabien Potencier <fabien@symfony.com>
*/
final class FragmentUriGenerator implements FragmentUriGeneratorInterface
{
private $fragmentPath;
private $signer;
private $requestStack;
public function __construct(string $fragmentPath, ?UriSigner $signer = null, ?RequestStack $requestStack = null)
{
$this->fragmentPath = $fragmentPath;
$this->signer = $signer;
$this->requestStack = $requestStack;
}
/**
* {@inheritDoc}
*/
public function generate(ControllerReference $controller, ?Request $request = null, bool $absolute = false, bool $strict = true, bool $sign = true): string
{
if (null === $request && (null === $this->requestStack || null === $request = $this->requestStack->getCurrentRequest())) {
throw new \LogicException('Generating a fragment URL can only be done when handling a Request.');
}
if ($sign && null === $this->signer) {
throw new \LogicException('You must use a URI when using the ESI rendering strategy or set a URL signer.');
}
if ($strict) {
$this->checkNonScalar($controller->attributes);
}
// We need to forward the current _format and _locale values as we don't have
// a proper routing pattern to do the job for us.
// This makes things inconsistent if you switch from rendering a controller
// to rendering a route if the route pattern does not contain the special
// _format and _locale placeholders.
if (!isset($controller->attributes['_format'])) {
$controller->attributes['_format'] = $request->getRequestFormat();
}
if (!isset($controller->attributes['_locale'])) {
$controller->attributes['_locale'] = $request->getLocale();
}
$controller->attributes['_controller'] = $controller->controller;
$controller->query['_path'] = http_build_query($controller->attributes, '', '&');
$path = $this->fragmentPath.'?'.http_build_query($controller->query, '', '&');
// we need to sign the absolute URI, but want to return the path only.
$fragmentUri = $sign || $absolute ? $request->getUriForPath($path) : $request->getBaseUrl().$path;
if (!$sign) {
return $fragmentUri;
}
$fragmentUri = $this->signer->sign($fragmentUri);
return $absolute ? $fragmentUri : substr($fragmentUri, \strlen($request->getSchemeAndHttpHost()));
}
private function checkNonScalar(array $values): void
{
foreach ($values as $key => $value) {
if (\is_array($value)) {
$this->checkNonScalar($value);
} elseif (!\is_scalar($value) && null !== $value) {
throw new \LogicException(sprintf('Controller attributes cannot contain non-scalar/non-null values (value for key "%s" is not a scalar or null).', $key));
}
}
}
}